355 citations · 3.1k across the 33 of their papers we have counts for
33 papers
Atmospheric Temperature Inversions and He I 5876 Core Profile Structure in White Dwarfs
Beth Klein, Simon Blouin, Diego Romani +7
We report distinctive core profiles in the strongest optical helium line, He I 5876, from high-resolution high-sensitivity observations of spectral type DB white dwarfs. By analyzi…
A SOFIA FORCAST Grism Study of the Mineralogy of Dust in the Winds of Proto-planetary Nebulae: RV Tauri Stars and SRd Variables
R. A. Arneson, R. D. Gehrz, C. E. Woodward +10
We present a SOFIA FORCAST grism spectroscopic survey to examine the mineralogy of the circumstellar dust in a sample of post-asymptotic giant branch yellow supergiants that are be…
The Chemical Composition of an Extrasolar Kuiper-Belt-Object
S. Xu, B. Zuckerman, P. Dufour +3
The Kuiper Belt of our solar system is a source of short-period comets that may have delivered water and other volatiles to Earth and the other terrestrial planets. However, the di…
Lambda Boo Abundance Patterns: Accretion from Orbiting Sources
M. Jura
The abundance anomalies in lambda Boo stars are popularly explained by element-specific mass inflows at rates that are much greater than empirically-inferred bounds for interstella…
Evidence for an Anhydrous Carbonaceous Extrasolar Minor Planet
M. Jura, P. Dufour, S. Xu +4
Using Keck/HIRES, we report abundances of 11 different elements heavier than helium in the spectrum of Ton 345, a white dwarf that has accreted one of its own minor planets. This p…
The Elemental Compositions of Extrasolar Planetesimals
M. Jura
Evidence is now compelling that most externally-polluted white dwarfs derive their heavy atoms by accretion from asteroids - the building blocks of rocky planets. Optical and ultra…